Anti-wear hydraulic oil and engine oil differ significantly in their cleaning properties, with engine oil exhibiting a significantly stronger cleaning ability than anti-wear hydraulic oil. This is determined by their respective working environments and functional designs.
Engine Oil: The "Engine Cleaner" with Active Cleaning Function
Engine oil not only lubricates the engine but also deals with carbon deposits, sludge, and acidic substances produced by high-temperature combustion. Therefore, it contains specialized detergents and dispersants that actively clean metal surfaces and suspend contaminants in the oil for removal through the oil filter.
Detergents can "wash away" carbon deposits and varnish adhering to piston rings and cylinder walls.
Dispersants prevent these impurities from accumulating and forming sludge that clogs oil passages. High-quality engine oils, such as Shell Helix Ultra and Fuchs oil, are renowned for their excellent cleaning performance.
Especially under turbocharged conditions or long-distance short-distance driving, cleanliness directly affects engine life.
Therefore, cleaning is one of the core functions of engine oil, and it is even referred to as the engine's "cleaning guardian." II. Anti-wear Hydraulic Oil: Cleanliness is not the primary objective; system stability is key.
Anti-wear hydraulic oil is mainly used for power transmission, and its working environment is relatively "clean," not directly contacting combustion products. Therefore, its cleanliness requirements are far lower than those of engine oil.
Hydraulic oil contains little or no detergent-dispersants and lacks active cleaning capabilities.
It focuses more on properties such as oxidation resistance, rust prevention, anti-foaming, and deemulsification to ensure precise response and stable operation of the hydraulic system.
Contaminant control relies primarily on external filtration systems, rather than the oil's own cleaning function.
If hydraulic oil is mistakenly used in an engine, its lack of cleaning ability can lead to sludge buildup and filter clogging.
